Insulator for electric wires.



PATENTED JULY 30, 1907. G. GALLAGHER. INSULATOR FOR ELECTRIC WIRES.

APPLIOATION FILED JUNE 14. 1904.

wuewroz men attpwwq I CONSTANTINE GALLAGHER, OF RICHMOND, VIRGINIA.

INSULATOR FOR ELECTRIC WIRES.

Specification of Letters Patent.

Patented July 30, 1907.

Application filed June 14, 1904. Serial No. 212,533-

To all whom it may concern:

Be it known that I, CONSTANTINE GALLAGHER, a citizen of the United States, residing at Richmond, in the county of Henrico and State of Virginia, have invented new and useful Improvements in Insulators for Electric Wires, of which the following is a specification.

This invention relates to insulators.

The objects of the invention are to improve and simplify the construction of such devices; furthermore, to increase their efficiency in use and to decrease the expense attending their manufacture.

With the foregoing and other objects in view which will appear as the description proceeds the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed as a practical embodiment thereof.

In the accompanying drawing forming part of this specification, Figure 1 is a perspective view showing my improved insulator in position within its holder; Fig. 2 is a central vertical section therethrough; Fig. 3 is a section on line 33, Fig. 2.

Referring to the figures by numerals of reference, 1 is a block of porcelain, or other suitable insulating material having a curved groove 2 in the front face thereof and extending from end to end. The walls of this groove are concave and convex, respectively, and are parallel and the distance between them is substantially equal to the diameter of a wire 3 adapted to be inserted therebetween. Integral lugs 4 are arranged upon opposite sides of the block 1, and are for the purpose hereinafter more fully described.

Block 1 is adapted to be placed within a holder of novel construction and which is also preferably formed of porcelain or other non-conducting material. This holder comprises a head 5 from the center of which projects a threaded stem 6, and at opposite edges of the head are located side flanges 7 which are spaced apart a distance equal to the width of insulator 1. The inner face of each of these flanges 7 has an L-shaped groove 8 therein, said grooves being arranged opposite each other and being similar in size. The grooves are of sufficient width to receive the lugs 4, and it will therefore be seen that by placing block 1 between flanges 7 and pressing the lugs 4 into the grooves 8 and then laterally to the inner ends of said grooves, prevent accidental disengagement of the parts. The stem 6 hereinbefore referred to is preferably in the form of a screw which is adapted to be inserted through an aperture 9 formed in the center of head 5, and it will be understood that block 1 will hold the head 5 securely in position on the stem.

In using this insulator the wire 3 is adapted to be placed within the groove 2 after block 1 has been locked in its holder. In order to place the wire in position it is first necessary to bend it so as to permit it to be readily inserted into the curved groove 2.

In the foregoing description I have shown the preferred form of my invention but I do not limit myself thereto as I am aware that modifications may bemade therein without departing from the spirit or sacrificing any of the advantages thereof, and I therefore reserve the right to make such changes as fairly fall within the scope of my invention.

Having thus fully described the invention, what is claimed as new, is

1. The combination with an insulator block having a curved groove in one face thereof, and oppositely disposed lugs upon the block; of a holder comprising a head, a stem loosely mounted within and projecting from the head, and oppositely disposed flanges upon the head and having angular grooves in their adjoining faces.

2. In an insulating device, a holder provided with Ir shaped slots at one side of a median plane, a block having lugs in said plane to engage said slots when in assembled relation, and means on said block for fastening a wire.

3. In an insulating device, a holder comprising a rectangular channeled body, an insulating block of the same dimensions as the channel, and an angular groove and a lug for holding the holder and block together.

4. In an insulating device, a holder comprising a rectangular channeled body, a rectangular insulating block to fit the channel in the body and an arc-shaped groove sunk perpendicular into the face of the block to retain a wire in place.

In testimony whereof, I affix my signature in presence of two witnesses.

his CONSTANTINE X GALLAGHER.

mark

Witnesses Fasxr: McCULnoUen, HUGH DENQON. 

